Finding the Third Proportional to 128,169,328 and 198,586,977
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Solution
The third proportional to 128,169,328 and 198,586,977 is: 307,692,862.63
Step by Step Solution
- Step 1: Write the proportion equation
128,169,328 : 198,586,977 = 198,586,977 : x - Step 2: Convert to fraction form
128,169,328/198,586,977 = 198,586,977/x - Step 3: Cross multiply
128,169,328x = 198,586,977 × 198,586,977 - Step 4: Simplify right side
128,169,328x = 39,436,787,433,998,528 - Step 5: Solve for x
x = 39,436,787,433,998,528/128,169,328 - Step 6: Final answer
x = 307,692,862.63
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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.